Climate change is 100% here. Hot days (> 30°C fig1 and 40°C fig2 ) increasing in frequency. Agricultural hardships indirectly makes the cost of living crisis harder. Melbourne temperature data graphed.
Source: https://www.extremeweatherwatch.com/cities/melbourne/yearly-days-of-40-degrees-c
https://www.extremeweatherwatch.com/cities/melbourne/yearly-days-of-30-degrees-c
It may look subtle, but these changes are unprecedented to occur in such a short time. There is no tinfoil theory to adequately explain this except for climate change due to fossil fuels use and land use change.
Renewables and storage (chemical, thermal, hydro) are a key solution.